Newegg offers the refurbished Sennheiser Amperior On-Ear Headphones in Silver or Blue for $99.99 with free shipping. That's $20 under the lowest total price we could find for another refurb, although we saw an open-box pair for $4 less two weeks ago. These closed-back headphones feature a 16Hz to 22kHz frequency response, noise-isolation earcups, and removable remote with in-line microphone.

A 90-day warranty applies, but it is unclear who backs it.